Scientists now have accurate methods (see below ) for dating fossils.
methods rely on characteristic faunal and geological patterns to bracket the period when the fossil existed.
“We find a pronounced warm period from 850 to 1100AD, which has its maximum between 9 AD.
This is about 100 years earlier than the described MCA in Mann et al.
It is important to recognize that the Pleistocene was a series of real ice ages, separated by relatively short interglacial periods. The glowing inferno just after Earth was formed is named Hadean.